Ng Lap Seng, a real-estate developer from Macau, appeared in Manhattan federal court on a brand new superseding indictment — which refers to the nickname — adding to criminal charges that he gave UN diplomats millions of dollars for favorable treatment.

“This is not an organized crime case. There is no ‘Boss Wu.’ With all do respect, this is a cheap shot,” fumed Ng’s lawyer Hugh Mo to Judge Vernon Broderick.

Mo and his co-counsel Tai Park want the judge to strike “Boss Wu” from the indictment, claiming prosecutors are trying to “smear” Ng.

They say Ng is referred to by many other titles, including “senior economic advisor.”

“How many times have you referred to a supervisor as a boss? I know I have,” Park said. “It creates a sinister aspect. We all know that.”

The superseding indictment tacks on additional charges that Ng violated US laws by allegedly bribing late ex-UN General Assembly President John Ashe and Deputy Ambassador Francis Lorenzo.

Ng’s assistant Jeff Yin, who was not in court, was additionally charged with tax evasion.

Lawyers for Ng and Yin said the fresh charges came as a complete surprise.

“This is literally outrageous,” said Park. “It’s just a recasting of facts they’ve known for a year.”

Broderick will decide at a later date whether to strike “Mr. Wu” from court documents.

“Aliases don’t really mean anything, right? The proof is what it is,” the judge said.

Lorenzo, a deputy ambassador for the Dominican Republic to the UN, pleaded guilty in March.

Ashe, 61, died in June after a barbell fell on his neck. He was accused of taking $1.3 million in bribes from Ng and other Chinese businessmen to push through real-estate deals.